A STUDY TO CORRELATE FLIGHT MEASURED HELICOPTER VIBRATION DATA AND PILOT COMMENTS

Abstract

Lissajous' patterns of resultant displacement, velocity, and acceleration are constructed and evaluated to define those characteristics which best correlate with the pertinent pilot comments. A new measure of comfort level, Equivalent Vibration Level (V sub og) is defined. These quantities are calculated for all Lissajous' figures, and resulant acceleration is seen to be the most meaningful parameter. n improvement in the degree of correlation between measured vibration and pilot comment is shown through the use of Veq for the patterns of resultant acceleration, in lieu of the standard vibration criteria.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1961
Accession Number
AD0269001

Entities

People

  • William J. Grant

Organizations

  • Boeing Rotorcraft Systems

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acceptability
  • Acquisition
  • Air Force
  • Aircrafts
  • Calibration
  • Data Analysis
  • Displacement
  • Equations
  • Frequency
  • Helicopters
  • Instrumentation
  • Measurement
  • Standards
  • Three Dimensional
  • Vibration
  • Waveforms
  • Waves

Fields of Study

  • Physics

Readers

  • Aviation Science / Aeronautics.
  • Regression Analysis.
  • Structural Dynamics.